دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The well whose wellbore deviates from vertical orientation and exceeds deviation angle required by straight hole.

n: a hole that is drilled vertically. The total hole angle is restricted. and the hole does not change direction rapidly no more than 3 per 100 feet (30.48 metres) of hole.

n: Vertical wellbore.It can be think as straight hole when well deviation and azimuth not exceeding the provided limit.

an essentially straight hole with less than 5o total deviation from surface to bottom hole and dogleg severity less than 3o/100 ft.

n: a downhole motor that rotates a bit by the action of the drilling mud on turbine blades built into the tool. When a turbodrill is used, rotary motion is imparted only at the bit;therefore, it is unnecessary to rotate the drill stem. Although straight holes can be drilled with the tool, it is used most often in directional drilling.

n: The dynamic drill that driving the turbine turn by drill fluid.